Heat gun. Then a chemical stripper. Plus months of time for the job . And then sanding. Lots of sanding. Then staining, and a sprayed professional topcoat. No way to pay the labor costs for as much labor as that costs. You either DIY, or you buy new cabinets.

Forget it lol

If they did a bad prep job, did little sanding, and left a lot of the clear finish between the wood and the paint film, it might be possible to get it off neatly... but still a ton of work. If they thoroughly sanded and/or used a good bonding primer, and/or the paint has gotten into the grain of the wood then it's pretty hopeless.

This is one of the biggest reasons, I suggest people live in a house for 6 months to a year, before they make changes that are huge and not reversable. What people think they want, when they move in, turns out to be something, they dont want later on.